Modification of Photoconductivity Spectra in ZnO–CdSe Quantum- Dot Composites upon Exposure to Additional Photoexcitation
- Authors: Drozdov K.A.1, Krylov I.V.1, Chizhov A.S.2, Rumyantseva M.N.2, Ryabova L.I.2, Khokhlov D.R.1
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Affiliations:
- Faculty of Physics
- Faculty of Chemistry
- Issue: Vol 52, No 7 (2018)
- Pages: 902-906
- Section: Microcrystalline, Nanocrystalline, Porous, and Composite Semiconductors
- URL: https://journals.rcsi.science/1063-7826/article/view/203689
- DOI: https://doi.org/10.1134/S1063782618070059
- ID: 203689
Cite item
Abstract
The incorporation of CdS nanocrystals into a porous ZnO matrix results in sensitization of the composite in the visible spectral region. Studies of the photoconductivity spectra upon variable external illumination show that the spectra undergo reversible transformations. It is shown that the shape of the peak and the position of the local photoconductivity maximum corresponding to nanocrystals depend on the wavelength distribution of the incident radiation intensity. The mechanisms responsible for the process are discussed.
About the authors
K. A. Drozdov
Faculty of Physics
Email: khokhlov@mig.phys.msu.ru
Russian Federation, Moscow, 119991
I. V. Krylov
Faculty of Physics
Email: khokhlov@mig.phys.msu.ru
Russian Federation, Moscow, 119991
A. S. Chizhov
Faculty of Chemistry
Email: khokhlov@mig.phys.msu.ru
Russian Federation, Moscow, 119991
M. N. Rumyantseva
Faculty of Chemistry
Email: khokhlov@mig.phys.msu.ru
Russian Federation, Moscow, 119991
L. I. Ryabova
Faculty of Chemistry
Email: khokhlov@mig.phys.msu.ru
Russian Federation, Moscow, 119991
D. R. Khokhlov
Faculty of Physics
Author for correspondence.
Email: khokhlov@mig.phys.msu.ru
Russian Federation, Moscow, 119991